Telltale and indicator for injectors



(No Model.)

T. M. EYNON. TELLTALE AND INDICATOR FOR INJBGTORS.

No. 566,154. Patented Aug. 18, 1 896.

WITNESSES:

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INVENTOR 6? AT'II'ORNEY.

-UNITED STATES PATENT OFFICE.

THOMAS M. EYNON, OF PHILADELPHIA, PENNSYLVANIA.

TELLTALE AND INDICATOR FOR INJECTORS.

SPECIFICATION formingpart of Letters Patent No. 566,154, dated August18, 1896.

Application filed December 27, 1895. Serial No. 573,539. (No model.)

To all Ll/710717, it may concern:

Be it known that I, THOMAS M. EYNON, a citizen of the United States,residing in the city and county of Phi1ade1phia,State of Pennsylvania,have invented a new and useful Improvement in Telltales and Indicatorsfor Injectors, which improvement is fully fet forth in the followingspecification and accompanying drawings.

My invention consists of the novel'combination of the suction-pipe of aninjector with a gage or indicating device therefor, whereby the heightof. the suction will be at all times indicated, thereby enabling theattendant to ascertain the height of the water-level when the injectoris drawing its supply from a closed tank, said gage also serving toshowwhen the injector has ceased to operate, if from any cause the supply ofwater has been cut off from the injector, and furthermore enabling theoverflow to be piped 0d, thereby avoiding any disfigurement due to thesplashing of water on the engine, &c., all as will be hereinafter setforth.

Figure 1 represents a side elevation, partly in section, of a telltaleand indicator for an injector embodying my invention. Fig. 2

represents a sectional view of a check-valve to be hereinafter referredto.

Referring to the drawings, A designates an injector, the same beingprovided with an operating-lever B and a steam-inlet, overflow, anddischarge pipes of the usual construction.

O designates the suction-pipe of the injector, the same terminating in atank D.

E designates a connection leading to a suitable portion of the injector,and having mounted thereon a sensitive vacuum-gage F, a valve G beinginterposed between said gage and pipe EL H designates a connectionleading from said suction-pipe C, and having a checkvalve J mountedtherein, said valve being provided with'an inlet L, in communicationwith the atmosphere, and a valve M, provided with a seat N, said valvebeing adapted to seat as indicated in Fig. 2..

The operation is as follows: When the injector is operating properly,the check in the valve J is held to its seat by the vacuum in thesuction-pipe C, but if from any cause the injector ceases to operate theVacuum will be destroyed and steam will be blown back through thesuction-pipe. The checkvalve will open and steam will appear in theorifice, thus giving notice that the injector has ceased to operate Thevacuumgage serves the purpose of indicating the height of the suction,thus enabling the attendant to ascertain the height of the water-levelwhen the injector is drawing its supply from a closed tank, said gagethus serving to show when the injector has ceased to operate, if fromany cause the supply of water has been out off therefrom, and itfurthermore enables the overflow to be piped off, thus avoiding anydisfigurement due to the splashing of water from the boiler, engine,850.

The check-valve J and the gage F may be used in combination orindependently, the same being intended chiefly for use in locomotiveservice, where the noise of the moving train makes it necessary for theengineer to tell by his eye whether the injector is working, it beingevident that they may be applied whenever it is essential to havewarning'of the failure of the injector to operate.

. Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an injector, a suction-pipe therefor, a branch pipe leading fromsaid suction-pipe, and a vacuum-gage mounted upon said branch pipe andadapted to be visible to the engi neer, whereby the latter is enabled tosee at all times Whether the injector is operating and performing itsproper function, substantially as described.

2. In an injector, a suction-pipe therefor, a connection leading fromsaid suction-pipe to the atmosphere, and a check-valve mounted on saidconnection and opening outwardly,

whereby in case of failure of the injector to 5 operate, steam will beblown back through the suction-pipe, and will open said checkvalve, andbeing visible to the attendant, will indicate that the injector hasceased to operate, substantially as described.

3. An injector having a suction-pipe connected therewith, a branchleading from said suction-pipe to the atmosphere and having acheck-valve mounted thereon, said check- Valve opening to theatmosphere, a second branch connected With said pipe-and having avacuum-gage mounted thereon, whereby the engineer is enabled toascertain if the injector is working properly, substantially asdescribed.

THOMAS M. EYNON.

WVitnesses:

E. AJMARKLEY, J. WILLARD GAMBLE.

